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Finding the Fourth Proportional to 72,604.80, 108,734.40 and 44,611.20

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Solution

The fourth proportional to 72,604.80, 108,734.40 and 44,611.20 is: 66,810.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,604.80 : 108,734.40 = 44,611.20 : x
  2. Step 2: Convert to fraction form
    72,604.80/108,734.40 = 44,611.20/x
  3. Step 3: Cross multiply
    72,604.80x = 108,734.40 × 44,611.20
  4. Step 4: Simplify right side
    72,604.80x = 4,850,772,065.28
  5. Step 5: Solve for x
    x = 4,850,772,065.28/72,604.80
  6. Step 6: Final answer
    x = 66,810.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.